btm_sec_mx_access_request() function

* Function btm_sec_mx_access_request * Description This function is called by all Multiplexing Protocols during * establishing connection to or from peer device to grant * permission to establish application connection. * Parameters: bd_addr - Address of the peer device * psm - L2CAP PSM * is_originator - TRUE if protocol above L2CAP originates * connection * mx_proto_id - protocol ID of the multiplexer * mx_chan_id - multiplexer channel to reach application * p_callback - Pointer to callback function called if * this function returns PENDING after required * procedures are completed * p_ref_data - Pointer to any reference data needed by the * the callback function. * Returns BTM_CMD_STARTED